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Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
There are many different software programs that are commonly used by a DCS. Which of the programs below would allow observation and control of the plant?
In synchronous transmission, which of the answers below best describes where the incoming data is always detected by the receiver?
Of the problems below, which would be best solved by shielding on cables?
The data transmission in HDX mode travels in _____ direction(s)? Choose the best answer from the ones provided to fill in the blank
In data transmission, a defined area of geographical coverage is commonly called an area network. Which of the area networks below is the second largest in area covered?
A defined area of geographical coverage is commonly called an area network. Which of the area networks below is a network that links smaller networks together, but potentially on a global scale?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to write the contents of a coil to the slave device?
In a DCS, there is a controller scan cycle priority that should have enough time to execute all tasks. Which of the answers below represents the about of free time for a loaded DCS controller to function?
Which of the answers below best describes the transmission mode of data between a DTE and a DCE?
There are numerous threats to the security of a DCS. Which of the security measures below would used be to prevent unauthorized changes from an operator?
A typical DCS has at least four layers in it's architecture. Valves, switches and transmitters are all under the direct control of which of the layers below?
There are several different network access methods available to wireless Ethernet. Which of the methods below is the one used by wireless Ethernet?
An industrial network can, with a set of configured rules, scan network traffic flow for security issues. Which of the terms below best represents this type of security measure?
The wired Ethernet transmission standards are defined by the OSI model layers. Which of the answers below is one of those defining layers?
Which of the answers below best represents the second bit sent in a RS-232 asynchronous frame?
Over the lifetime of a HMI, there will be changes to it's software form the supplier. Which of the terms below would describe the red number in the picture below?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best represent the image below?
There are several fields in an Ethernet message frame structure. Which of the answers represent the total amount of fields in an Ethernet message frame?
There are several different ways to let an operator know about an alarm in any HMI. Which of the answers below would best be described as a flashing alarm?
Which of the answers below best represents the most common way to indicate the range of frequencies that can be used for a transmission system with little or no attenuation?
In each OSI layer, each device must be identified to be used. In which of the layers below does the physical address of each network device reside?
Over the lifetime of a HMI, there will be changes to it's software form the supplier. Which of the terms below would best describe the red number in the picture below?
There are several different network access methods available to wired Ethernet. Which of the methods below is the one used by wired Ethernet?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "H"?
In IPv4, it is possible to divide the class of network into a smaller network. Which of the terms below best describes this process?